Important Chart Issued by the Conservancy Board: Monthly Table of Tidal Predictions Now Issued We reproduce herewith a copy of ing tidal data, these predictions predictions will be sent out during] With reference to the graph here a graph compiled by the Whangpo> being based on astronomical data September. with published, the curves are plot Conservancy Board, showing curves (assuming normal meteorological A tidal prediction was made for ted from the mean of direct observa-from which approximate numerical conditions), and the results of direct the month of June, 1927, and daring of the various factors, the values of tidal factors may be taken observation. June the various factors. were ob- period of observation being three for any lunar period. Copies. of the September pre served. A copy of- the prediction moons, This graph is of the first impor-tions have been sent to us, and such and later observations: may be The bulletin for the time being: s tance in connexion with, what are|copies may be obtained: on applica- inspected at the Conservancy issued gratis, but a nominal charge now to°be issued—monthly bulletins tion at the Board's office. October office. per copy may eventually be-made, The table-showing the prediction of tides is too long to be published, Dut it will be of the very greatest assistance to all connected with the' navigation of the river, and-in de" ing to issue-it, the.officials-of the Whangpoo Conservancy Board' are' to be congratulated on their. enterprise.
Text read from the printed page and cleaned; old type leaves the occasional error.